From Theorem REF  we know that \(\hat{\mathcal {R}}_{m}(\ell \circ \mathcal {H}) \le \mathcal {O}\left(\frac{B \prod _{j=1}^{d} M(j)}{\gamma } \sqrt{\frac{d}{m}}\right)\) . Combine this with Lemma 3 in [1]} we can have the above result.
